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<FONT color="green">001</FONT>    // Copyright 2008 Waterken Inc. under the terms of the MIT X license<a name="line.1"></a>
<FONT color="green">002</FONT>    // found at http://www.opensource.org/licenses/mit-license.html<a name="line.2"></a>
<FONT color="green">003</FONT>    package org.waterken.trace.application;<a name="line.3"></a>
<FONT color="green">004</FONT>    <a name="line.4"></a>
<FONT color="green">005</FONT>    import java.io.Serializable;<a name="line.5"></a>
<FONT color="green">006</FONT>    import java.lang.reflect.Member;<a name="line.6"></a>
<FONT color="green">007</FONT>    import java.lang.reflect.Proxy;<a name="line.7"></a>
<FONT color="green">008</FONT>    <a name="line.8"></a>
<FONT color="green">009</FONT>    import org.joe_e.Struct;<a name="line.9"></a>
<FONT color="green">010</FONT>    import org.joe_e.array.IntArray;<a name="line.10"></a>
<FONT color="green">011</FONT>    import org.joe_e.array.PowerlessArray;<a name="line.11"></a>
<FONT color="green">012</FONT>    import org.ref_send.log.CallSite;<a name="line.12"></a>
<FONT color="green">013</FONT>    import org.ref_send.log.Trace;<a name="line.13"></a>
<FONT color="green">014</FONT>    import org.waterken.trace.Tracer;<a name="line.14"></a>
<FONT color="green">015</FONT>    <a name="line.15"></a>
<FONT color="green">016</FONT>    /**<a name="line.16"></a>
<FONT color="green">017</FONT>     * Produces a stack trace composed of only calls initiated by application code.<a name="line.17"></a>
<FONT color="green">018</FONT>     */<a name="line.18"></a>
<FONT color="green">019</FONT>    public final class<a name="line.19"></a>
<FONT color="green">020</FONT>    ApplicationTracer {<a name="line.20"></a>
<FONT color="green">021</FONT>        private ApplicationTracer() {}<a name="line.21"></a>
<FONT color="green">022</FONT>    <a name="line.22"></a>
<FONT color="green">023</FONT>        /**<a name="line.23"></a>
<FONT color="green">024</FONT>         * Constructs an instance.<a name="line.24"></a>
<FONT color="green">025</FONT>         * @param code  application class loader<a name="line.25"></a>
<FONT color="green">026</FONT>         */<a name="line.26"></a>
<FONT color="green">027</FONT>        static public Tracer<a name="line.27"></a>
<FONT color="green">028</FONT>        make(final ClassLoader code) {<a name="line.28"></a>
<FONT color="green">029</FONT>            class TracerX extends Struct implements Tracer, Serializable {<a name="line.29"></a>
<FONT color="green">030</FONT>                static private final long serialVersionUID = 1L;<a name="line.30"></a>
<FONT color="green">031</FONT>                <a name="line.31"></a>
<FONT color="green">032</FONT>                public long<a name="line.32"></a>
<FONT color="green">033</FONT>                timestamp() { return System.currentTimeMillis(); }<a name="line.33"></a>
<FONT color="green">034</FONT>                <a name="line.34"></a>
<FONT color="green">035</FONT>                public String<a name="line.35"></a>
<FONT color="green">036</FONT>                readException(final Throwable e) { return e.getMessage(); }<a name="line.36"></a>
<FONT color="green">037</FONT>    <a name="line.37"></a>
<FONT color="green">038</FONT>                public Trace<a name="line.38"></a>
<FONT color="green">039</FONT>                traceException(final Throwable e) {return trace(e.getStackTrace());}<a name="line.39"></a>
<FONT color="green">040</FONT>                <a name="line.40"></a>
<FONT color="green">041</FONT>                public Trace<a name="line.41"></a>
<FONT color="green">042</FONT>                traceMember(final Member lambda) {<a name="line.42"></a>
<FONT color="green">043</FONT>                    return trace(new StackTraceElement(<a name="line.43"></a>
<FONT color="green">044</FONT>                        lambda.getDeclaringClass().getName(), lambda.getName(),<a name="line.44"></a>
<FONT color="green">045</FONT>                        null, -1));<a name="line.45"></a>
<FONT color="green">046</FONT>                    // TODO: want the line number of the method declaration<a name="line.46"></a>
<FONT color="green">047</FONT>                }<a name="line.47"></a>
<FONT color="green">048</FONT>    <a name="line.48"></a>
<FONT color="green">049</FONT>                public Trace<a name="line.49"></a>
<FONT color="green">050</FONT>                traceHere() {return trace(Thread.currentThread().getStackTrace());}<a name="line.50"></a>
<FONT color="green">051</FONT>                <a name="line.51"></a>
<FONT color="green">052</FONT>                private Trace<a name="line.52"></a>
<FONT color="green">053</FONT>                trace(final StackTraceElement... frames) {<a name="line.53"></a>
<FONT color="green">054</FONT>                    final PowerlessArray.Builder&lt;CallSite&gt; sites =<a name="line.54"></a>
<FONT color="green">055</FONT>                        PowerlessArray.builder(frames.length);<a name="line.55"></a>
<FONT color="green">056</FONT>                    for (final StackTraceElement frame : frames) {<a name="line.56"></a>
<FONT color="green">057</FONT>                        final int line = frame.getLineNumber();<a name="line.57"></a>
<FONT color="green">058</FONT>                        if (1 == line) { continue; }    // skip synthetic method<a name="line.58"></a>
<FONT color="green">059</FONT>                        <a name="line.59"></a>
<FONT color="green">060</FONT>                        // Is this frame from application code or system code?<a name="line.60"></a>
<FONT color="green">061</FONT>                        boolean included = false;<a name="line.61"></a>
<FONT color="green">062</FONT>                        try {<a name="line.62"></a>
<FONT color="green">063</FONT>                            final Class&lt;?&gt; c = code.loadClass(frame.getClassName());<a name="line.63"></a>
<FONT color="green">064</FONT>                            if (!Proxy.isProxyClass(c)) {<a name="line.64"></a>
<FONT color="green">065</FONT>                                final ClassLoader lib = c.getClassLoader();<a name="line.65"></a>
<FONT color="green">066</FONT>                                final ClassLoader sys =<a name="line.66"></a>
<FONT color="green">067</FONT>                                    ApplicationTracer.class.getClassLoader();<a name="line.67"></a>
<FONT color="green">068</FONT>                                for (ClassLoader i=code; i!=sys; i=i.getParent()) {<a name="line.68"></a>
<FONT color="green">069</FONT>                                    if (lib == i) {<a name="line.69"></a>
<FONT color="green">070</FONT>                                        included = true;<a name="line.70"></a>
<FONT color="green">071</FONT>                                        break;<a name="line.71"></a>
<FONT color="green">072</FONT>                                    }<a name="line.72"></a>
<FONT color="green">073</FONT>                                }<a name="line.73"></a>
<FONT color="green">074</FONT>                            }<a name="line.74"></a>
<FONT color="green">075</FONT>                        } catch (final ClassNotFoundException e) {<a name="line.75"></a>
<FONT color="green">076</FONT>                            // Assume it's not an application code class.<a name="line.76"></a>
<FONT color="green">077</FONT>                        }<a name="line.77"></a>
<FONT color="green">078</FONT>                        if (!included) { continue; }<a name="line.78"></a>
<FONT color="green">079</FONT>                        <a name="line.79"></a>
<FONT color="green">080</FONT>                        // Describe the application stack frame.<a name="line.80"></a>
<FONT color="green">081</FONT>                        final String name; {<a name="line.81"></a>
<FONT color="green">082</FONT>                            final String fqn = frame.getClassName();<a name="line.82"></a>
<FONT color="green">083</FONT>                            final String cn = fqn.substring(fqn.lastIndexOf('.')+1);<a name="line.83"></a>
<FONT color="green">084</FONT>                            final String sn = cn.replace("$1",".").replace("$",".");<a name="line.84"></a>
<FONT color="green">085</FONT>                            name = sn + "." + frame.getMethodName();<a name="line.85"></a>
<FONT color="green">086</FONT>                        }<a name="line.86"></a>
<FONT color="green">087</FONT>                        final String source; {<a name="line.87"></a>
<FONT color="green">088</FONT>                            final String fqn = frame.getClassName();<a name="line.88"></a>
<FONT color="green">089</FONT>                            final int end = fqn.indexOf('$');<a name="line.89"></a>
<FONT color="green">090</FONT>                            final String top = -1==end ? fqn : fqn.substring(0,end);<a name="line.90"></a>
<FONT color="green">091</FONT>                            source = top.replace('.', '/') + ".java";<a name="line.91"></a>
<FONT color="green">092</FONT>                        }<a name="line.92"></a>
<FONT color="green">093</FONT>                        sites.append(new CallSite(name, source, line &gt; 1<a name="line.93"></a>
<FONT color="green">094</FONT>                            ? PowerlessArray.array(IntArray.array(line)) : null));<a name="line.94"></a>
<FONT color="green">095</FONT>                    }<a name="line.95"></a>
<FONT color="green">096</FONT>                    return sites.length() != 0 ? new Trace(sites.snapshot()) : null;<a name="line.96"></a>
<FONT color="green">097</FONT>                }<a name="line.97"></a>
<FONT color="green">098</FONT>            }<a name="line.98"></a>
<FONT color="green">099</FONT>            return new TracerX();<a name="line.99"></a>
<FONT color="green">100</FONT>        }<a name="line.100"></a>
<FONT color="green">101</FONT>    }<a name="line.101"></a>




























































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